MCU

• ESP32-C3 embedded, 32-bit RISC-V single-coreprocessor, up to 160 MHz
• 384 KB ROM
• 400 KB SRAM (16 KB for cache)
• 8 KB SRAM in RTC

WiFi

• IEEE 802.11 b/g/n-compliant
• Center frequency range of operating channel:2412~2484 MHz
• Supports 20 MHz, 40 MHz bandwidth in 2.4 GHzband
• 1T1R mode with data rate up to 150 Mbps
• Wi-Fi Multimedia (WMM)
• TX/RX A-MPDU, TX/RX A-MSDU
• Immediate Block ACK
• Fragmentation and defragmentation
• Transmit opportunity (TXOP)
• Automatic Beacon monitoring (hardware TSF)
• 4 × virtual Wi-Fi interfaces
• Simultaneous support for Infrastructure BSS inStation mode, SoftAP mode, Station + SoftAPmode, and promiscuous modeNote that when ESP32-C3 family scans in Stationmode, the SoftAP channel will change along withthe Station channel.
• Antenna diversity
• 802.11mc FTM

Bluetooth

• Bluetooth LE: Bluetooth 5, Bluetooth mesh
• Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps
• Advertising extensions
• Multiple advertisement sets
• Channel selection algorithm #2

Hardware

• Interfaces:
  • GPIO
  • SPI
  • UART
  • I2C
  • I2S
  • remotecontrol peripheral
  • LED PWM controller
  • general DMA controller
  • TWAI® controller (compatible withISO 11898-1)
  • temperature sensor
  • SAR ADC
• 40 MHz crystal oscillator
• 4 MB SPI flash
• Operating voltage/Power supply: 3.0~3.6 VDC
• Operating ambient temperature: –40~85 °C (This is the 85 °C version module)
• Dimensions: (18.0 × 20.0 × 3.2) mm

The 32-bit core RISC-V microcontroller features a maximum clock speed of 160 MHz. With 22 configurable GPIOs, 400 KB of internal RAM and low-power-mode support, it can facilitate many different use-cases involving connected devices. The high-temperature support makes it ideal for industrial and lighting use-cases as well. The module is supported through Espressif's open-source ESP-IDF making it easy to develop around.

WiFi and Bluetooth LE 5.0 with long-range (LR) support help building devices with great coverage and improved usability. ESP32-C3 continues to support Bluetooth LE SIG Mesh and Espressif WiFi Mesh. Furthermore, the solid RF performance of ESP32-C3 is sustained at a higher operating temperature.

Security is now a main feature of the ESP32 line. The ESP32-C3 ensures that the availability of features, such as the RSA-3072-based secure boot and the AES-128-XTS-based flash encryption, can be used to build connected devices securely. The innovative digital signature peripheral and the HMAC peripheral provide a secure device identity for applications. Hardware acceleration support for cryptographic algorithms ensures good performance for the secure communication both in a local network and with the Cloud.